sulcus
Americannoun
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sulci
plural
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a furrow or groove.
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Anatomy. a groove or fissure, especially a fissure between two convolutions of the brain.
noun
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a linear groove, furrow, or slight depression
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any of the narrow grooves on the surface of the brain that mark the cerebral convolutions Compare fissure
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of sulcus
1655–65; Latin: furrow
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Example Sentences
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These patterns were based on sulcus depth and cortical thickness, which describe the folding of the brain surface and the thickness of the brain's outer layer.
From Science Daily ● Jan. 4, 2026
"You can think about the intraparietal sulcus as having two knobs on a radio dial: one that adjusts focusing and one that adjusts filtering," Ritz said.
From Science Daily ● Mar. 8, 2024
The circumflex artery arises from the left coronary artery and follows the coronary sulcus to the left.
From Textbooks ● Jun. 19, 2013
The lateral sulcus that separates the temporal lobe from the other regions is one such landmark.
From Textbooks ● Jun. 19, 2013
Spiracular sulcus: on the metanotum of Hymenoptera, is a grooved linear channel extending from spiracle to apical margin.
From Explanation of Terms Used in Entomology by John. B. Smith
Soccer players who headed the ball at high levels showed abnormality of the brain's white matter adjacent to sulci, which are deep grooves in the brain's surface.
From Science Daily ● Nov. 27, 2024
Researchers measured differences in brain size and in sulci shape and location—factors that have been shown to reflect the underlying cortical organization of the brain in previous studies.
From Science Magazine ● Nov. 16, 2015
The pia extends into every convolution of the CNS, lining the inside of the sulci in the cerebral and cerebellar cortices.
From Textbooks ● Jun. 19, 2013
Coronary vessel branches that remain on the surface of the artery and follow the sulci are called epicardial coronary arteries.
From Textbooks ● Jun. 19, 2013
These gyri are separated from each other by fissures and sulci, some of which are considered to subdivide the hemisphere into lobes, whilst others separate the gyri in each lobe from each other.
From Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" by Various
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
